h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#app {
  height: 100%;
  font-size: 14px;
}